123013203015400 has 24 divisors (see below), whose sum is σ = 286005697011270. Its totient is φ = 49205281206080.

The previous prime is 123013203015377. The next prime is 123013203015413. The reversal of 123013203015400 is 4510302310321.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 67459643877924 + 55553559137476 = 8213382^2 + 7453426^2 .

It is a super-2 number, since 2×123013203015400² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 307533007339 + ... + 307533007738.

Almost surely, 2^{123013203015400} is an apocalyptic number.

123013203015400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123013203015400 is an abundant number, since it is smaller than the sum of its proper divisors (162992493995870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123013203015400 is a wasteful number, since it uses less digits than its factorization.

123013203015400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615066015093 (or 615066015084 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 123013203015400 its reverse (4510302310321), we get a palindrome (127523505325721).

The spelling of 123013203015400 in words is "one hundred twenty-three trillion, thirteen billion, two hundred three million, fifteen thousand, four hundred".